Public Notice Per- and Polyfluoroalkyl Compounds (PFAS): The Sudbury Water District would like to make the public aware of our system’s status with respect to per- and polyfluoroalkyl substances, commonly called PFAS. These man-made compounds originated in the 1940s and are just about everywhere. The compounds can be found in clothing, non-stick cookware, rugs, fire-fighting foams, cosmetics, ski wax, food packaging, as well as many other products. PFAS has even been detected in rainwater. It’s therefore not surprising that PFAS compounds are being detected in drinking water supplies, although usually at very, very low concentrations.